Physics, 30.03.2020 21:16 Cheyanne5627
During her high bar routine from question 2, Gabby Douglas slipped and falls from the high bar, landing on a 10 cm thick gymnastics mat. She strikes the back of her head against the mat during her landing. Her head is moving at 7 m/s when it first strikes the mat. The mass of her head is 5 kg. The impact ends when her head comes to a stop after deflecting the mat 6.5 cm.
a. How much kinetic energy does her head have the instant just before it hits the mat?
b. How much work does the mat do to stop the motion of her head?
c. What average impact force exerted by the mat on her head during impact?
d. Estimate the peak impact force exerted by the moat on her head.
e. Eestimate the peak acceleration of her head.
f. Express the peak acceleration in g's.
Answers: 2
Physics, 22.06.2019 01:00, anna4060
First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit
Answers: 2
During her high bar routine from question 2, Gabby Douglas slipped and falls from the high bar, land...
Social Studies, 02.09.2020 02:01